How long have they been printing money? I mean sure, it gets new colors every now and then, maybe some security enchancements, and many countries have the fancy plastic bills now vs paper. But jesus, printing currency is a technology from centuries ago! LOL
Except they dont need to literally print paper money anymore. Nearly every one is using contactless card payments these days for even small amounts. I don't even remember the last time i withdrew cash from an ATM.
Digits that only you can move and digits that you can store yourself without any counter party risk?